The three-year arithmetic of per-register software rent, with the self-hosted alternative measured on a real server: 536 MiB of RAM and roughly $12 a month.
A comparison that says which numbers were measured and which were not. Odoo 18 used 536 MiB on our server, not the 4 GB usually quoted — and the real dividing line is whether you manufacture anything.
Odoo 18 deployed and measured on a live VPS: 536 MiB with three workers, 77 seconds to install the POS modules, and the one setting that decides whether the WebSocket port exists at all.
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